Polymer Composites- Solgel- Organic Dyes Raman spectroscopy reveals that the chains of PMMA polymerised in the pores of gel silica glasses form hydrogen bonds with the pore surface silanol groups. Differential Scanning Calorimetry confirms the observation seen by an increase of the glass transition temperature. The effects of organic dyes on the dynamics of chain relaxations are further observed by thermally stimulated currents.   These composites are used to create advanced solid state dye lasers.